OpenBSD's battery status get back into the BSD case

Maybe the original commiter forgot the * so s/he decided to get OpenBSD's
case nest into the `$os` instead of `$distro`.

I suspect the original reason that because OpenBSD's `$distro` output
is `OpenBSD $(uname -m)` instead of just `OpenBSD` so the results didn't
appear.

Anyway, for consistency, I decided to bring OpenBSD's battery case back
to the `$distro` case, add a very little fix (which is the *) and the
problem should be fixed.

neofetch

@@ -1670,10 +1670,8 @@ getbattery() {
                     battery="$(envstat | awk '\\(|\\)' '/charge:/ {print $2}')"
                     battery="${battery/\.*/%}"
                 ;;
-            esac
-        ;;
 
-        "OpenBSD")
+                "OpenBSD"*)
                     battery0full="$(sysctl -n hw.sensors.acpibat0.watthour0)"
                     battery0full="${battery0full/ Wh*}"
 
@@ -1683,6 +1681,8 @@ getbattery() {
                     [ "$battery0full" ] && \
                     battery="$((100 * ${battery0now/\.} / ${battery0full/\.}))%"
                  ;;
+            esac
+         ;;
 
         "Mac OS X")
             battery="$(pmset -g batt | grep -o '[0-9]*%')"